Advancing Floating Offshore Wind Mooring & Dynamic Cable Infrastructure for Sustainable Offshore Wind Energy

14 Submissions
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Challenge under evaluation

Challenge overview

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Overview: 

As the global energy landscape undergoes a transformation towards lower-carbon solutions and renewables, Seaway7 stands at the forefront of facilitating this energy evolution. Envisioning a future where offshore wind projects play a pivotal role in the global energy mix, substantial investments, projected to reach approximately US$8 billion annually by 2025, are anticipated from oil and gas supermajors. In commitment to driving the energy transition, Seaway7 is spearheading a challenge focused on advancing Floating Offshore Wind (FOW) Mooring & Dynamic Cable infrastructure. This initiative seeks to harness innovation to meet the rising demand for renewable energy and optimize the efficiency and cost-effectiveness of subsea systems, contributing to the sustainability goals of the offshore energy industry. 

Problem Background: 

Despite the promising trajectory of offshore wind projects, the current state of FOW Mooring & Dynamic Cable infrastructure presents key challenges. Elevated costs associated with installation and logistics, bespoke ancillaries contributing to high expenses, and unique challenges in mooring, such as excessive material usage and space limitations, underscore the need for innovative solutions. Additionally, the transition from fixed to floating wind introduces additional complexity with the dynamic nature of cable and associated ancillaries impacting overall project costs and installation timelines. Amid this transition, aligning mooring and cable solutions with energy transition goals and ensuring effective risk mitigation remain critical. 

Dynamic cables, present specific issues, including bespoke cable clamps, non-standardized hang-off systems, and inefficient bend restrictor designs, buoyancy elements, etc. These challenges contribute to increased costs, installation complexities, and potential concerns regarding cable integrity over time. 

Mooring systems today present specific issues including, large seabed footprint, high material consumption in terms of fibre and/or mooring chain, large offsets calling for complex wave configurations on dynamic cables, dimensions and proof loading/ stretching requirements beyond capabilities of existing methods and fleet. Further the mooring ancillaries including H- links, pull- trough connectors, tensioners, buoyancy elements, etc. are not optimized to take the serial nature into account enabling cost efficient manufacturing as well as efficient and robust installation. 

  

Solution Requirements

In response to these challenges, Subsea 7 invites participants to propose transformative solutions for FOW Mooring & Dynamic Cable infrastructure. The solutions should address the following requirements: 

  1. Integration with Energy Transition Goals: 
    Develop solutions that seamlessly align with broader energy transition objectives, promoting sustainability and lower-carbon alternatives.

  2. Economic Viability and Scalability: 
    Propose solutions that enhance economic viability, ensuring scalability to accommodate the anticipated increase in annual investments. 

  3. Technological Advancements: 
    Introduce cutting-edge technologies revolutionizing mooring systems, anchor fabrication, and dynamic cable designs, leveraging smart technologies, automation, and digital solutions. 

  4. Operational Flexibility and Coexistence: 
    Address space utilization challenges by optimizing mooring systems to allow coexistence with various offshore activities, fostering operational flexibility. 

  5. Risk Mitigation and Reliability: 
    Propose measures to effectively mitigate risks associated with design and installation, ensuring the long-term reliability and performance of the mooring and cable infrastructure. 

Participants are encouraged to think creatively and propose solutions that also optimize cable and/ or mooring solutions. The challenge represents a unique opportunity to shape the industry's trajectory towards enhanced reliability, reduced costs, and increased scalability in FOW Mooring & Dynamic Cable infrastructure. 

We welcome innovative solutions across the entire technology readiness level (TRL) spectrum, from TRL 1 to 9. While we value advancements and methodologies that can directly address our challenges, our specific focus lies in fostering groundbreaking ideas, research, and concepts. We are particularly interested in pioneering solutions that may be at an early stage of development, and we are eager to collaborate with Seaway7 to validate and test these novel concepts. 

 

Evaluation Criteria 

To ensure that the proposed solutions not only meet our innovation and sustainability goals but also align with Seaway7's operational and economic realities, each submission will be evaluated based on the following criteria: 

  • Feasibility: Solutions must be technically viable, utilizing current or near-future technology. They should demonstrate a clear understanding of the Floating Offshore Wind (FOW) Mooring & Dynamic Cable infrastructure requirements and constraints. 

  • Implementation Feasibility: Proposals should include a detailed plan for implementation, considering the existing infrastructure and operational practices of Seaway7. They must address potential challenges in deployment and suggest realistic ways to overcome them. 

  • Development Time: Solutions should provide an estimated timeline from concept to deployment. Faster deployment timelines are preferable, provided they do not compromise the quality or effectiveness of the solution. 

  • Cost: Solutions should demonstrate a clear and quantifiable benefit over costs. Proposals with a higher ROI will be given preference, especially those that can achieve break-even in a shorter period.  

  • Environmental and Social Impact: Besides economic benefits, solutions should also contribute positively to environmental sustainability and social responsibility, aligning with broader energy transition goals. 

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